Backdrop stand



FIG. 1 is a front elevation view of a backdrop stand showing the new design;

FIG. 2 is a back elevation view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a perspective view thereof;

FIG. 9 is an enlarged view of the encircled portion in FIG. 7 ;

FIG. 10 is an enlarged view of the encircled portion in FIG. 7 ;

FIG. 11 is an enlarged view of the encircled portion in FIG. 4 ;

FIG. 12 is an enlarged view of the encircled portion in FIG. 7 ; and,

FIG. 13 is an enlarged view of the encircled portion in FIG. 7 .

The evenly dashed broken lines depict portions of the article and form no part of the claimed design. The unevenly dashed broken lines demarcate the enlarged views and form no part of the claimed design. 

CLAIM The ornamental design for a backdrop stand, as shown and described. 